Alert archive / Alabama / Special Weather Statements in 2021
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at Aug 1, 2021, 2:39 PM CDT for Chilton County, Alabama. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2021, 2:39 PM CDT (19:39 UTC)
- Expired
- Aug 1, 2021, 3:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Birmingham, AL
County Chilton County, AL
The radar
The Birmingham radar (KBMX), 46 km from the middle of the area, began a volume at 19:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 7.7 hours before the alert went out and 47 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1867 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 834 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
469 WWUS84 KBMX 011939 SPSBMX Special Weather Statement National Weather Service Birmingham AL 239 PM CDT Sun Aug 1 2021 ALZ033>035-040-041-012030- Chilton AL-Autauga AL-Bibb AL-Dallas AL-Perry AL- 239 PM CDT Sun Aug 1 2021 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN AUTAUGA...SOUTHERN CHILTON...NORTHEASTERN PERRY...SOUTHEASTERN BIBB AND NORTHEASTERN DALLAS COUNTIES UNTIL 330 PM CDT... At 239 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Talladega National Forest to 9 miles northwest of Paul M Grist State Park. Movement was southeast at 25 mph. Winds in excess of 40 mph will be possible with these storms. Locations impacted include... Clanton, Centreville, Thorsby, Maplesville, Billingsley, Vida Junction, Parnell, Plecher, Lawley, Mulberry, Paul M Grist State Park, Talladega National Forest, Chilton County Motor Sports Park, Pooles Crossroads, Randolph, Lomax, Stanton, Six Mile, Bibb County Airport and Valley Creek Junction. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with these storms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3283 8650 3243 8673 3269 8727 3302 8704 TIME...MOT...LOC 1939Z 298DEG 23KT 3292 8699 3268 8712 $$ 87/GRANTHAM
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 12:16 PM CDT | Special Weather Statement | BMX | Pickens | 44 min |
| Aug 1, 12:59 PM CDT | Special Weather Statement | BMX | Greene | 46 min |
| Aug 1, 1:44 PM CDT | Special Weather Statement | BMX | Hale | 46 min |
| Aug 1, 2:36 PM CDT | Special Weather Statement | BMX | Montgomery | 39 min |
| Aug 1, 3:29 PM CDT | Special Weather Statement | BMX | Chambers | 31 min |
| Aug 1, 3:31 PM CDT | Special Weather Statement | BMX | Tallapoosa | 29 min |
| Aug 1, 3:45 PM CDT | Special Weather Statement | BMX | Autauga, Dallas | 45 min |
| Aug 1, 4:09 PM CDT | Special Weather Statement | BMX | Chambers, Tallapoosa | 51 min |
| Aug 1, 4:52 PM CDT | Special Weather Statement | BMX | Lee | 53 min |
| Aug 1, 5:16 PM CDT | Special Weather Statement | BMX | Montgomery | 44 min |
Nearby
Special Weather Statements in Alabama, 2021Every special weather statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.